A picture book combines visual and verbal narratives in a book format, most often aimed at young children. With the narrative told primarily through text, they are distinct from comics, which do so primarily through sequential images. The images in picture books can be produced in a range of media, such as oil paints, acrylics, watercolor, and pencil. Picture books often serve as pedagogical resources, aiding with children's language development or understanding of the world.

Three of the earliest works in the format of modern picture books are Heinrich Hoffmann's Struwwelpeter from 1845, Benjamin Rabier's Tintin-Lutin from 1898 and Beatrix Potter's The Tale of Peter Rabbit from 1902. Some of the best-known picture books are Robert McCloskey's Make Way for Ducklings, Dr. Seuss's The Cat In The Hat, and Maurice Sendak's Where the Wild Things Are. The Caldecott Medal (established 1938) is awarded annually for the best American picture book. Since the mid-1960s, several children's literature awards have included a category for picture books.